You can summarize human history in one word – hunger. History books tell us a major human advance was the shift from hunter/gathering society to sedentary agriculture. It makes little sense from a dietary perspective.
Anyone that claims we have any idea what is really happening with global weather and climate is displaying how little they actually know. The IPCC say they are 90% certain global warming and climate change is due to human-produced CO2.
In England, the Agricultural Revolution preceded the Industrial Revolution. A similar pattern has occurred in China over the last thirty years as increased food production preceded industrial and economic growth. Just like England, it caused massive migration from rural to urban. This pattern of increasing food supply preceding urbanization is repeated through history. It is the prerequisite for forming or maintaining a civilization.